* {
    margin: 0;
    padding: 0;
}

ul,
li {
    list-style: none;
}

.footer,
.header {
    width: 1200px;
    height: 80px;
    margin: 0 auto;
    background-color: skyblue;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 40px;
    color: #fff;
}

.footer {
    height: 300px;
    font-size: 100px;
}

.content {
    width: 1200px;
    padding: 10px 0;
    margin: 0 auto;
}

ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

li {
    width: 280px;
    border: 1px solid #333;
    padding-bottom: 10px;
    margin-bottom: 10px;
}

li > img {
    width: 280px;
    height: 320px;
    display: block;
}

li > p {
    padding-left: 10px;
    padding-top: 10px;
}

.loading {
    width: 1200px;
    margin: 0 auto;
    display: none;
}

.loading.active {
    display: block;
}

.loading {
    width: 1200px;
    height: 200px;
    background: url(./loading.gif) no-repeat center/cover;
}
